A 12 foot ladder leans against the side of a house the bottom of the ladder is 7 feet from the side of the house how high is the top of the ladder from the ground

1 answer

the ladder, the ground, and the side of the house form a right triangle

the ladder is the hypotenuse

use Pythagoras to find the height of the top of the ladder ... a^2 + b^2 = c^2